Mesogramma apiifolium
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Image 1
Habit
09 Apr 2009
Image 2
Leaves
09 Apr 2009
Image 3
Flower
09 Apr 2009
Image 4
Flower
09 Apr 2009
Image 5
Flower
09 Apr 2009
| Family: | Asteraceae |
| Full name: | Mesogramma apiifolium DC. |
| ID status: | Fairly certain |
| Afrikaans common name(s): | - |
| English common name(s): | - |
| Synonym(s): | Senecio apiifolius (DC.) Benth. & Hook. f. ex O. Hoffm. (1897) Senecio peculiaris Dinter (1932) *Senecio sisymbriifolius Dinter Cineraria microglossa DC. (1838) |
| Status: | Native |
| Description: | Annual glabrous erect herb, branching from the base. Leaves cauline, alternate, petiolate (petiole -3 cm long) to sessile (esp. upper leaves), leaf-blade ovatelanceolate, grossly dentate or pinnalilobate with 5-j) lobes on each side, apically mucronate, 3-7 cm long, 1- 3 cm wide; upper leaves gradually smaller. Peduncles 3- 8 cm long, nude except for 1- 2 subulate bracts. Capitula 1- 2 or up to 12 and laxly corymbose. Involucre calyculate; calyculus bracts 2- 5, subulate, ca. I mm long. Involucral bracts 10-21, almost biseriate, lanceolate, 4-{; mm long, 0.8-1 mm wide, green with scarious margins, midribbed with a thin blackish resin vein and with two lateral blackish resin ducts; lateral resin stripes of inner bracts broad and glandulardoned. Capitula radiate, yellow-flowered. Receptacle slightly convex, glabrous, minutely foveolate. Ray- florets 8- 13, female, fertile; style bilobed; tube cylindrical, ca. 2 mm long; lamina oblong, 4-5 mm long, 1.5 mm wide, 4-veined. Disc-florets numerous (ca. 30-70), hermaphroditic. Corolla tubular, gradually widening above, 5-lobed, distinctly 5-veined with black veins from corolla tips down to the base of the tube; corolla lobes triangular-ovate, 0.5--D.7 mm long, with thin lateral veins in addition to the dark midvein. Anthers saginate or minutely caudate; apical appendage narrowly ovate, obtuse; endothecial cells elongate, radial (but those of dehiscence zone shorter and polarized); filament collar distinctly balusterform. Style with dark resin vein branching into the style branches; base swollen, placed on a short stylopodium; style branches linear-oblong with separated stigmatic areas, apically truncate with rather long sweeping-hairs. Cypselas sUbtriquetrous or somewhat compressed, constricted apically and basally, ca. I mm long, black, with 3 lines of white papilliform obtuse duplex hairs, mucilaginous when soaked, and apically and basally with a crown of longer hairs with rounded tips; carpopodium distinct with 4-{; rows of sclerifled cells. Pappus bristles numerous (ca. 20), uniseriate, basally connate, ca. 3 mm long, white, barbellate with acute teeth, caducous. (from Dauresia and Mesogramma: one new and one resurrected genus ofthe Asteraceae-Senecioneae from Southern Africa, Nordenstam and Pelser, 2005) |
| Link(s) |
African Plant Database
JSTOR Plant Science Kew Herbarium Catalogue BGBM Berlin-Dahlem - Virtual Herbarium Züricher Herbarien iNaturalist (Namibia / Alex Dreyer) iNaturalist (Namibia) iNaturalist (southern Africa) Flora of Zimbabwe Fleurs de notre Terre - Galerie Namibie Tree Atlas of Namibia |
| Content last updated: | 18 Apr 2024 |
